Hello Nabid,
I am glad to help.
As said, Sensor Fusion is the process where data from several different sensors are fused to complete computations that a single sensor could not handle.
Using a gyroscope in addition to an accelerometer yields the ability to smoothly measure rotation in 3D space, although the system can only yield orientation to some random horizontal global frame of reference (Sensor Fusion Library for Kinetis MCUs).
The readings that the device can take in a second are different for every sensor. For example, the MMA8451 (accelerometer) is capable of measuring magnetic fields with an output data rate (ODR) from 1.56 Hz to 800 Hz; these output data rates correspond to sample intervals from 640 ms to 1.25 ms.
I invite you to use the Sensor Fusion Toolbox for windows. You may find more information at the following document, especially from Part 4:
Hands-On Workshop: Freescale Sensor Fusion Library for Kinetis MCU
Please find the prices at Ordering Details from the document mentioned.
In case it is useful for you, you may refer to this blog:
http://blog.nxp.com/sensors/simulate-motion-for-sensor-fusion
Please let me know if this information is useful for you.
If I misunderstood your question, feel free to let me know. I will be glad to help.
Have a great day.
David Diaz.